<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <span th:include="~{include::mycss}"></span>
</head>
<body>
         <div class="container">
             <span th:utext="${msg}"></span>
              <form th:action="@{/login}" method="post" th:object="${user}">
                  账号：<input type="text" name="username">

                  密码：<input type="password" name="password">

                  <button class="btn btn-success">登录</button>
              </form>
         </div>
</body>
</html>
